Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
6983Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
13967513.8old
13630817823.7old
655437203581211445.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001282 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse28C2B2D9DE7017BF3013
Verified2017-10-12kkmrkkblmbrbk28C2B2D9DE7017BF3516113
Verified2020-04-17Oliver Kruse9A9FC2530507F5D33133153
Verified (Factored)2022-05-12Jorge Coveiro9A9FC2530507F5D31395553
Verified2024-02-03Wentao Huang9A9FC2530507F5D33514253
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6983/13967/13630817/65543720358121 : 9A9FC2530507F5D3
PRP: Verified
PRP without proof (small exponent)
2023-08-20-Anonymous-NF-PM1
B1=35000000000, B2=143589103727719650
2022-05-12Jorge CoveiroC-PRP
M6983/13967 : 9A9FC2530507F5D3
PRP: Verified
PRP without proof (small exponent)
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M6983/13967/13630817/65543720358121 : 9A9FC2530507F5D3
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M6983/13967/13630817/65543720358121 : 28C2B2D9DE7017BF
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6983/13967/13630817/65543720358121 : 28C2B2D9DE7017BF
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6983/13967/13630817/65543720358121 : 28C2B2D9DE7017BF
PRP without proof (not generated)